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BR3W CITY · 05-19-2015, 01:19 AM

Even if another member running the same gen truck and the same trans DID take measurements, the variable we mentioned still apply. Those 1-3" of difference are enough to make-or-break the fitment...so it wouldn't actually help you.

I don't know how long a donor 2500hd driveshaft is, nor do I know what your stock driveshaft length is. But the best I can do is tell you this; the internet says a 4l80e is ~26.25" long. An LS motor is about 1.25" shorter than a small block. You could tape measure some generic line of sight measurements and ballpark the difference....but at that point why wouldn't you just measure the right way?

05-19-2015, 01:19 AM	#14
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: driveshaft options Even if another member running the same gen truck and the same trans DID take measurements, the variable we mentioned still apply. Those 1-3" of difference are enough to make-or-break the fitment...so it wouldn't actually help you. I don't know how long a donor 2500hd driveshaft is, nor do I know what your stock driveshaft length is. But the best I can do is tell you this; the internet says a 4l80e is ~26.25" long. An LS motor is about 1.25" shorter than a small block. You could tape measure some generic line of sight measurements and ballpark the difference....but at that point why wouldn't you just measure the right way? __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD